I claim the ornamental design for the casket, as shown and described.
FIG. 1 is a perspective view of a casket showing my new design with half of
its lid in an open position and having shading depicting its wood
structure;
FIG. 2 is a top plan view thereof;
FIG. 3 is a side elevational view thereof, the opposite side is a mirror
image; and,
FIG. 4 is an end elevational view thereof, the opposite end is a mirror
image.